Perhaps you should try some spelling variations:
nhung luan » nhung lan, chung luan, khung luan
luong tiet » luong thiet, luong viet, luong tien
trinh kim » trinh kiem, trinh ki, trinh kinh
trinh tim » trinh tin, trinh tam, trinh kiem
quang yen » quan den
van chat » cao chat
tiet ke » thiet ke, tiet kiem
nhung » nhuong, nchung, ndung
hung » huong, chung, dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: cong ((trinh kim) OR (trinh tim)) nhung luan van chat luong tiet ke ((quang yen) or (hung yen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong ((trinh kim) OR (trinh tim)) nhung luan van chat luong tiet ke ((quang yen) OR (hung yen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "cong ((trinh kim) OR (trinh tim)) nhung luan van chat luong tiet ke ((quang yen) or (hung yen))".
• Adding a wildcard symbol may retrieve word variants: cong ((trinh kim) OR (trinh tim)) nhung luan van chat luong tiet ke ((quang yen) or (hung yen))*.